package com.pimee.web;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;

import com.pimee.common.config.UbConfig;
import com.pimee.common.constants.Constants.Web;
import com.pimee.common.util.DateUtil;
import com.pimee.common.util.StringUtils;
import com.pimee.common.util.file.FileUploadUtils;
import com.pimee.common.util.file.FileUtils;
import com.pimee.common.util.web.Result;
import com.pimee.common.util.web.ServletUtils;

/**
 * 通用请求处理
 * 
 * @description
 * @author Bruce Shaw 2020年2月16日 下午11:16:44
 */
@Controller
public class CommonController {

	private static final Logger log = LoggerFactory.getLogger(CommonController.class);

	@Resource
	private ServletUtils servletUtils;

	/**
	 * 通用下载请求
	 * 
	 * @param fileName
	 *            文件名称
	 * @param delete
	 *            是否删除
	 */
	@GetMapping("common/download")
	public void fileDownload(String fileName, Boolean delete, HttpServletResponse response,
			HttpServletRequest request) {
		try {
			if (!FileUtils.isValidFilename(fileName)) {
				throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 ", fileName));
			}
			String excelName = fileName.substring(fileName.indexOf("_") + 1);
			String realFileName = excelName.substring(0, excelName.indexOf(".")) + "_" + DateUtil.getCurTimestampStr()
					+ excelName.substring(excelName.indexOf("."), excelName.length());
			String filePath = UbConfig.getDownloadPath() + fileName;

			response.setCharacterEncoding("utf-8");
			response.setContentType("multipart/form-data");
			response.setHeader("Content-Disposition",
					"attachment;fileName=" + FileUtils.setFileDownloadHeader(request, realFileName));
			FileUtils.writeBytes(filePath, response.getOutputStream());
			if (delete) {
				FileUtils.deleteFile(filePath);
			}
		} catch (Exception e) {
			log.error("下载文件失败", e);
		}
	}

	/**
	 * 通用上传请求
	 */
	@PostMapping("/common/upload")
	@ResponseBody
	public Object uploadFile(MultipartFile file) throws Exception {
		try {
			// 上传文件路径
			String filePath = UbConfig.getUploadPath();
			// 上传并返回新文件名称
			String fileName = FileUploadUtils.upload(filePath, file);
			String url = servletUtils.getUrl() + fileName;
			ModelMap ajax = Result.ok();
			ajax.put("fileName", fileName);
			ajax.put("url", url);
			return ajax;
		} catch (Exception e) {
			return Result.error(e.getMessage());
		}
	}

	/**
	 * 本地资源通用下载
	 */
	@GetMapping("/common/download/resource")
	public void resourceDownload(String resource, HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		// 本地资源路径
		String localPath = UbConfig.getProfile();
		// 数据库资源地址
		String downloadPath = localPath + StringUtils.substringAfter(resource, Web.RESOURCE_PREFIX);
		// 下载名称
		String downloadName = StringUtils.substringAfterLast(downloadPath, "/");
		response.setCharacterEncoding("utf-8");
		response.setContentType("multipart/form-data");
		response.setHeader("Content-Disposition",
				"attachment;fileName=" + FileUtils.setFileDownloadHeader(request, downloadName));
		FileUtils.writeBytes(downloadPath, response.getOutputStream());
	}
}
